I just can't believe those voltages, you could run that @ 5GHz all day... I had a 4970K that took 1.45v to get 5GHz - Unstable though! http://valid.x86.fr/7a6kyg

Heh
With those voltages of 1.45V I could do 5400MHz, CPU-z stable

Super-pi 32M stable, 1.23V

XTU bench stable, 1.27V

I dont have any more screens but as far as I remember, it was 100% stable 5G @1.28-1.29V.

Now ...what do you consider "stable" ?
For me passing 2-4Hours of realbench stress test + 10x H264 in a loop is good enough.
At 5.1G @1.35V I never had any problem with stability.
I will be doing some more test and fine tuning once I finish my build with this new Formula baby

One thing I realized is, that after ~2 weeks of usage, a cpu goes through a "burn-in phase". So basically, if you dial some OC right away when you buy a CPU, it may become a little bit unstable after ~few weeks. It's not degradation....its something else...

Now ...what do you consider "stable" ?
For me passing 2-4Hours of realbench stress test + 10x H264 in a loop is good enough.At 5.1G @1.35V I never had any problem with stability.
I will be doing some more test and fine tuning once I finish my build with this new Formula baby

One thing I realized is, that after ~2 weeks of usage, a cpu goes through a "burn-in phase". So basically, if you dial some OC right away when you buy a CPU, it may become a little bit unstable after ~few weeks. It's not degradation....its something else...

Try this for 50 loops, It'll take around 5 hours! I could pass it @ 4.8... 4.9 was too hot and a lot of volts!

Wait a minute, I just realized that I'm not on the SkyLake thread!! I have no idea what effect this may have on Haswell... Try it and see!

No thanks theres no reason to run that.
I've very happy with Asus Real Bench stability test, which includes H264 encoding .... It's been proven its a very good stability tester with real world tests.
If you pass several hours of that, I don't think you will see any instability while gaming unless you are editing video for several hours or something.. Try RB <3

No thanks theres no reason to run that.
I've very happy with Asus Real Bench stability test, which includes H264 encoding .... It's been proven its a very good stability tester with real world tests.
If you pass several hours of that, I don't think you will see any instability while gaming unless you are editing video for several hours or something.. Try RB <3

I've run RB on several occasions, including H264 for ten loops, which you mentioned... The reason I suggested X264, was that is one of the ways to be counted in the SkyLake Overclocking Board w/ Statistics - They are rather over the top, as far as stress testing goes...